- Effective
- August 22, 1979
- Published
- August 20, 1979
- Issued
- August 8, 1979
- Model
- PA-38-112
- Data sheet
- TCDSA18SO
- Registered aircraft
- 442 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-3531
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed November 21, 2025.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 20 KB | 1bd97e3b…ac75209 | FAA DRS (API key needed) |
On this page
The airworthiness directive
79-17-05 PIPER: Amendment 39-3531. Applies to Model PA-38-112 serial numbers 38-78A0002 thru 38-78A0027, 38-78A0029 thru 38-78A0037, 38-78A0039 thru 38-78A0041, 38-78A0043, 38-78A0045 thru 38-78A0064, 38-78A0066 thru 38-78A0072, and 38-78A0074 thru 38-78A0104.
Compliance required as indicated unless already accomplished.
a. To prevent the occurrence of insufficient or intermittent grounding of the fuel gauges and engine instrument cluster, accomplish the following:
Within the next 25 hours in service after the effective date of this AD, install ground wire harness assembly P/N 77960-400 and connect leads to instruments and terminal ground strip in accordance with Piper Service Bulletin No. 603, or an approved equivalent alteration.
Equivalent alterations must be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration (FAA), Eastern Region.
b. Aircraft may be flown in accordance with 21.197 to a base where the modification required by this AD can be accomplished.
This amendment is effective August 22, 1979.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 442
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1978 | 195 |
|---|---|
| 1979 | 113 |
| 1980 | 4 |
| 1981 | 23 |
| 1982 | 8 |
99 with no year recorded